Ventilator.



H. F. MARANNILLE.

VENTILATOB.

. APPLICATION FILED AUG. 3. 1907. 938,067. Patented Oct.26, 1909. 2SHEETS-SHEET 1.

WFTNESSE'S: E6: INVENTOE,

. H. F. MARANVILLE.

VENTILATOB.

APPLICATION nun AUG. 3, 1901.

Patented Oct. 26, 1909.

2 SHEETS-SHEET 2.

- INVKNTOR' 2 I HARVEY I. MABANVILLE, OF AKRON, OHIO.

VENTILATOB.

Specification of Letters Patent.

Application filed August 8, 1907. Serial No. 386,878.

Patented Oct. 26, 1909.

To all whom it may concern:

Be it known that I, HARVEY F. MARAN- VILLE, a citizen of the UnitedStates, residinguseful Improvement in Ventilators, of which the followinis a full, clear, and exact description, reference being had to theaccompanying drawings.

invention relates to ventilators and ventllating systems.

In the use of ventilators, it frequently happens that, owing to thelocation of the building or factory wherein the ventilators areemployed, it is impossible to obtain sufficient draft to change the airwith such frequency as to relieve the occupants from excessive heat andfrom inhaling injurious gases and vapors. It has been sug ested, to curethis defect in the operation of ventilators, that fans or other positivedraft-creating mechanism be combined therewith, but the constructionsheretofore suggested have been liable to such objections as to preventthem from coming into general use.

The objects of my invention are to provide for ventilatorsandventilating apparatus draft-creating mechanism which can beautomatically placed into and out of operation as occasion may require;to combine such mechanism with the dampers of ventilators in such mannerthat, when it is desirable to close the damper part1 or .wholly, theclosing movement of the amper will automatically place thedraft-creatingmechanism out of operation, while the openin of the damperwill automatically place sai mechanism into operation; to provlde meanswhereby ventilator dampers may be automatically closed in case of fire;also to provide eflicient means for operating from a common source ofpower the fans or draftcreating mechanisms of a system of venti lators.

More limitedly, my invention contemplates combining the draft-creatingmechanism with dampers in such manner that, in case of fire, the damperswill be automatically closed and the draft-creating mechanism placed outof operation.

- Generally speaking, the invention may be defined as consisting of thecombinations of elements, for the purposes set forth, embodied in thedrawings forming part hereof andincluded in the claims hereto annexed.In the drawings, wherein one embodiment of my invention is illustrated,Figure 1 represents a vertical sectional view through a ventilatorhaving my invention applied thereto; Fig. 2 represents a correspondingsectional view, taken at right angles to Fig. 1, the fan, the drivingmechanism therefor and the weighted lever which automatically close thedamper being shown in elevation; Fig. 3 represents a sectional view onthe correspondingly numbered line of Fig. 2;.Fig. 4 re resents a portionof a building having app ied thereto a ventilator equipped with myinvention and showing means whereby the draft-creating mechanisms may beoperated by a common shaft, and Fig. 5 represents a. perspective view ofthe fusible link through which, the weighted damper is su ported.

escribing the parts by reference numerals, 1 represents a ventilator ofapproved construction, the same comprising a vertical air shaft 2,carrying at the upper end thereof a downwardly inclined deflecter 3. Thetop of the air shaft is covered by means of a hood 4 comprising a skirt4 which is spaced from the upper end of the air shaft to provide a freeannular space or port 5 for the escape or admission of air. The upperend of 4: is closed by means of a top 50, which is preferably of glass,the glass being retained 1n place by means of a' flange 6 and being suported by one or more angle bars 7 exten ing beneath the same and securedto the casing 4. A deflector 8 is carried by section 4 and projectsdownwardly parallel with deflector 3, providing therebetween a space forthe air which flows to or escapes from the port 5. A sleeve 9 surroundsthe outer ends fof deflectors 3 and 8 and is spaced therefrom to shieldthe ventilator from violent drafts or air currents.

The shield 9 may be supported from the body of the ventilator in anyapproved manner, as by straps 10 and 111 wh ch connect the lower ends ofthe deflectors 3 and 8 respectively withsaid shield,

the shield thus forming a means. for supporting the hood from the airshaft. The upper end of deflector 8 may project into the interior oftheskirt 4, providing therein an upwardly projecting ring or iange 13 towhich the adjacent portlon of 4 may be secured. This securing means isshown as a flange 14 formed on-the portion of skirt" 4: which isimmediately above the deflector 8 and secured to sald deflector bysolderin ,The lower portion of v skirt 4 may be a cy indrical section ofthe same diameter asthe upper portion and having its upper end securedto deflector 8, the up er and lower sections of the skirt constitutingin effect a continuous skirt.

Within the upper portion of air shaft. 2, there is slidably fitted thedamper 15. This damper comprises a cylindrical casing of sufficientlength to close the port 5 and at the same time retain a guidingconnection with the air shaft 2. At its upper end, damper 15 is providedwith a downwardly extending flange 16, which is adapted to engage theupper end of the air shaft and thereby support the damper in its openposition. As a convenient means foroperating the damper, I have providedthe following construction: 17 denotes a cross bar extending across theair shaft 2 and connected at its op osite ends with said shaft. At thecent-ra portion of said bar there is provided a support 18, shown as atee, to the upwardly extendin branch of which there is fitted a ide r19, the upper end of said rod fi ing secured to the an le bar 7, at thecentral portion thereof.- n this ide rod there is slidably fitted a hub20 w ich supports the inner ends of rods 21, said rods eing connected attheir outer ends with damper 15 and forming with said hub a spider. Theinner ends of the rods may be threaded or otherwise suitably secured tothe hub. The hub is shown as providedwith a pair of upwardly extendinglugs 22 to WhlCh are connected links 23, the upper ends of said linksbeing connected to a yoke 24 carried by the inner end of a lever'25.This lever is supported, intermediate of its ends, by a stra 26, the uperend of which may be carrie by angle ar 7. To the outer end of lever25, which is ad'acent to'the inner surface of the skirt 4, t ere-isconnected a downwardly extending link 27, the lower end whereof iscurved inwardl and is pivotall connected to the weights lever 28, mtermeiate of the'ends thereof. The outer end of said lever is pivotallysupported from the air shaft, as by means of. In s 29 secured to saidshaft. The lever exten s across'the air shaft and is provided, near itsfree end,

with a weight 30. To the free end of said lever there 1s connected asmall rope 31 passing through a block or pulley 32 which may besuspended from the flan e 13, or any other convenient portion of tiehood. 1 The lower end of rope 31 may be securedto any fixed object. Itwill be apparent that, by merely slacking off on rope 31, the weight 30Wlll automatically lift the damper 15, through the interposedconnections, Owing to the fact that the link 27 is connected. to

' by belt 40.

.28 and the rope 31.

. ously closing the 7 connection between the fan 33 and its riveshaft.

I have provided the damper with draftcreating mechanism, in the shape ofa fan 33, which. may be carried by the hub 20,

roller bearin s 34 bein ub 20' an rovided between a spindle on t einterior of the fan hub. The fan hub is provided on its lower surfacewith a suitable driven device, as a disk 340, which is engaged by andadapted to be driven by a suitable driving devlce, as a friction disk35. This disk is supported by a shaft 36, which is preferably mountedWithin the-air shaft, the outer end of the shaft being supported by abearing 37 carried by the air shaft and the inner end being supported ina bearing 38 which may be conveniently carried by the tee 18. Shaft 36may be driven from any suitable source of power, as "by a pulley 39driven It will be apparentthat, when the damper 15 1s moved 1n aclosingdirection, it will carry with it the fan 33 and will automatically breakthe driving connection between said fan and shaft 36. When the dam er islowered to its full open position, dis: 340 w ll be engaged by disk 35and the fan will be rotated. This capability of o eratlon is of greatortance in the ventilator art. WVhen it is esirable or necess'a to closethe damper even partially, it wi be evident that there will be nooccasion for the fan to operate; in fact, under such conditlons, itwould be highl undesirable to have the fan operate. On t e other hand,when maximum draft is desired, the damper will be opened to its fullextent, at which time the fan will be automatically placed in operation.

My invention contemplates also the automatic closing of the damper andthe susension of operationof thefan in case of res. It will be readilyappreciated that in such event, the draft through'the'ventilators'should be cut off in order to limit the spread of theflames as much as possible. To accomplish this result, I employ afusible connection between the free end of lever This connection isshown clearly in Figs. 1 and 5 and comprises a pair of metallic membersor straps 41 con-- nected together byfusible metal 42, which will meltat a temperature of about 165 degrees F. In the event of fire, the metal42 uses and the wei ht 30 dro s, simultanebreakin amper an the I haveshown in Fig. 4, somewhat diagrammatically, means by which the fans in asystem of ventilators may be operated. In

this view, 420 denotes a building provided with a number of myventilators. Extending beneath said ventilators there is a shaft 43which may be driven continuously from an source of power. This shaft isprovi ed, beneath each ventilator, with a drive pulley 4:4 to which isapplied the belt by means of which ulley 39 and shaft 36 are rotated. Aswill appear from this figure, one of these belts, 40, may be crossed, tocause the fan within the ventilator-there above to operate in thereverse direction fromthe fan in one or more ofthe other ventilators. Inthis manner, air may be positively drawn into one ventilator while beingforced out of the other, thereby insuring an effective ventilation ofthe building. The location of the shaft 36 entirely within the air shaftenables my ventilator" to be applied to existing types of buildingsWithout any alteration thereof for the purpose of accommodating thisshaft.

Having described .m invention, 'Iclaim:

1. In a ventilator, t e combination of adamper, and draft-creatingmechanism carried by sald damper, substantially as specified.

2. In a ventilatorythe combination of an air shaft, a damper therein,and a fan movism movable therewith.

' nally of said ventilator, a fan rotatably able with said damper,substantially as specified. 1 a

3. In a ventilator, the combination of an' air shaft, a hood spaced fromsaid air shaft to provide an air port, a sleeve-damper combined withsaid air shaft and adapted to close said port, and draft-creatingmechan- 4. In a ventilator, the comb ation of an a'ir shaft, a hoodtherefor, space being provided between said hood andj'said'a'ir shaft, aring damper combined withsaid'air shaft, means for moving said damper toclose said port more or less, a fan carried by said damper and havin adriven-member, and a driving member or said "driven member supportedwithin said airsha ft, substantially as specified.

5. In a ventilator, thecombination of an air shaft, a damper movablelongitudinally with respect thereto, a fan movable with said damper andhavin a driven member, and a driving member or said driven member,substantially as specified.

6. In a ventilator, the combination of an air shaft, a hood forming withsaid shaft an air port, a guide rod extending longitudimounted on saidguide rod, a driven member for said fan, a damper movable longitudinallyof said ventilator, means for supporting said fan whereby it may movewith said damper, a driving member adapted to engage said driven member,and a s ring on said rod tending to force said mem ers into engagement.

air shaft, a fan rotatably mounted in said air shaft, a driven memberfor said fan, a damper movable longitudinally of said vent1lator, meansconnecting said fan with said damper, a driving member adapted to engagesaid driven member, and a spring tendm to force said members intoengagement, su stantially as specified.

8. In a ventilator, the combination of an air shaft, a hood formingtherewith an air port, a damper movable longitudinally of saidvent1lator to close the air ort more or less, a spider connected withsaid damper, one-or more links connected to said spider, a lever pivotedintermediate of its ends and having one end connected to said link orlinks, a link connected to the opposite end of said lever, and aweighted lever connected air shaft, a damper movablelongitudinally ofsaid ventilator, a lever pivoted intermediate of its-ends and having oneend connected to said damper, a link connected to the opposite end ofsaid lever, and a weighted lever connected intermediate of its ends tosaid link, substantially as s cified.

10. In a ventilator, the combination of an air shaft, a dam er movabletherein, a lever pivoted interme iate of its ends and having one endconnected to said dam er, a link connected to the opposite end 0 saidlever, and a weighted lever ivoted at one end to the air shaft andconnected intermediate of gsdends to said link, substantially as speci-1 1. In a ventilator, the combination of a hollow ventilator body havingan air port, a sliding damper adapted to control said port, and meansfor operating said damper, said meanscomprising a centrally locatedmember connected with said damper, a lever pivoted intermediate of itsends and having one end connected with said member, a link connectedwith the opposite end of said lever, a weighted lever pivoted at one endto the ventilator body and having a connection intermediate of its ends'to the first mentioned lever, substantially as specified.

12. In a ventilator, the combination of a hollow ventilator body havingan air port, a sliding damper adapted to control said port, and meansfor operating said damper, said means comprising a centrally locatedmember connected with said damper, a lever pivoted intermediate of itsends and having one end connected with said member, a link connectedwith the opposite end of said lever, a weighted lever pivoted at one endwithin the ventilator body and having a connection with the firstmentioned lever, substantially as specified.

13. In a ventilator, the combination of a ventilator body having an airport, a slidable damper. adapted to control said port a weighted lever,connections between said ever and sa'id damper for automatically closingthe same, and means, includin a fusible connection, for supporting theweighted end '7 l y last-mentioned means out of operation, subof saidlever, substantia as specified.

15. In a ventilator, the combination of an air shaft, a fan associatedtherewith, means for rotating said fan, a weighted lever, and

a connection between said fan and said lever adapted to automaticallybreak the connection between the fan and its rotating means,substantially as specified.

16. In a ventilator, the combination of an "air shaft, a fan associatedtherewith, means for rotating said fan, a wei ht connected with said fanand adapted to reak the connection between the same and its rotatingmeans, anda fusible connection adapted to maintain said weight ininoperative relation to said fan, substantially as s ecified.

17 In a ventilator, the com ination of an air shaft, draft-creatingmechanism associated therewith, means for operatin said mechanism, meansfor automatically Ereaking the connection between the draft-creatin?mechanism and its operating means, and a" usible connection adapted tomaintain the stantially as specified.

In testimony whereof, I hereunto aflix my signat'ure'in the presence oftwo witnesses.

HARVEY F. MARANVILLE.

Witnesses:

M. E. Mn'rzcnn, C. E. KILLINGER.

